1) Every country ( to try ) to provide laws which ( to help ) its people to live safely and as comfortable as possible.
2) Laws ( not to change ) since primeval times.
3) Uncle Fred ( to finish ) a prison sentence and now he ( to be ) a freeman.
4) - What you ( to do ) yesterday at 3 o’clock? - I ( not to remember ) .
5) Alice ( to take off ) her coat when the telephone ( to ring ) .
6) - What Mary ( to do )? - She ( to answer ) the investigator’s questions.
7) The man ( to serve ) in police since he ( to graduate ) from Police Academy.
8) Mike ( not to leave ) yet. I ( to speak ) to him over the telephone this morning.
9) I ( to take ) an exam in 2 days, that is why I ( to prepare ) for it all day long tomorrow.
10) We ( to be ) happy if you ( to catch ) the murderer.
11) Edward understood that he ( to see ) the man before.
12) Old Fred ( to be ) in prison many times when I ( to get ) acquainted with him.